EP0489789B1 - Dispositif d'injection de carburant pour moteurs a combustion interne a compression d'air - Google Patents
Dispositif d'injection de carburant pour moteurs a combustion interne a compression d'air Download PDFInfo
- Publication number
- EP0489789B1 EP0489789B1 EP90912907A EP90912907A EP0489789B1 EP 0489789 B1 EP0489789 B1 EP 0489789B1 EP 90912907 A EP90912907 A EP 90912907A EP 90912907 A EP90912907 A EP 90912907A EP 0489789 B1 EP0489789 B1 EP 0489789B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- injection
- smoke
- fuel
- characteristic
- speed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2409—Addressing techniques specially adapted therefor
- F02D41/2422—Selective use of one or more tables
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0002—Controlling intake air
- F02D41/0007—Controlling intake air for control of turbo-charged or super-charged engines
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Definitions
- the invention relates to a fuel injection device for an air-compressing internal combustion engine according to the preamble of claim 1, as is implemented in vehicles of the BMW type BMW TD (series 1987).
- the minimum value selection stage only the minimum value of the fuel quantities taken from the smoke map and the torque limitation characteristic is forwarded to the quantity signal box for a specific operating point.
- the invention has for its object to provide a fuel injection device of the generic type in which the smoke development mentioned is avoided.
- the proposal according to the invention ensures that only that amount of fuel is injected with which a smoke-free operation is ensured at the actual start of spraying.
- the particle values and HC emissions are also positively influenced.
- an electronic fuel injection device for an air-compressing internal combustion engine in which the air pressure, the air mass, the speed and the start of injection are also used to determine the injection quantity, but in contrast to the injection device who starts the invention, a permissible injection quantity, which is still modified by the intake pressure, is stored as a function of the fuel / air ratio, the measured speed and the measured start of injection in a three-dimensional map for all operating states.
- This table is also suitable for determining the injection quantity permissible for smoke-free operation, so that the problem to be solved by the present invention does not occur there.
- the injection pump which is designed as a distributor injection pump in the exemplary embodiment, contains a schematically indicated quantity setting device 3 and a spray adjuster 4.
- the injection adjuster 4 receives signals from an injection start sensor 5, in which the start of injection setpoint value is stored as a function of operating parameters.
- a comparator 5a receives the setpoint from the injection starter 5 and the actual signal of the start of injection from a sensor in the holder of the injection nozzle, compares this signal with the setpoint and gives a corresponding signal to the injection adjuster.
- the quantity signal box 3 receives signals from an electronic control unit 6, which contains, among other things, a smoke map 7 and a torque limitation characteristic 8.
- a minimum value selection stage 9 selects the smaller of the fuel quantities M 1 or M 2 determined for the operating point in question from the smoke map 7 and from the torque limitation characteristic 8 and only passes a signal corresponding to the smaller quantity to the quantity signal box 3.
- control unit 6 contains a further characteristic map 10, in which the maximum injection quantity for a smoke-free operation is stored as a function of the speed and the actual start of injection.
- the signal of the injection quantity M3 determined from the map 10 is also fed to the minimum value selection stage 9, which now selects the smallest among the three values M1, M2 and M3 supplied to it and forwards a corresponding signal to the quantity signal box 3.
- the provision of the additional characteristic map 10 reliably ensures that the injection quantity is not above the value at which smoke-free operation is possible.
- the system-related delay in the readjustment of the electromechanically or electrohydraulically operated spray adjuster 4 is thus switched off, in particular in the case of a rapid load change, which can lead to smoke development.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Claims (2)
- Dispositif d'injection de carburant pour un moteur à combustion interne à compression d'air (1), comprenant une unité de commande électronique (6) pour un régulateur de débit (3) en vue de la détermination de la quantité de carburant injectée, qui comprend au moins un diagramme caractéristique de fumée (7) avec les valeurs des quantités de carburant injectées en fonction de la pression atmosphérique et de la vitesse de rotation ou de la masse d'air et de la vitesse de rotation ainsi qu'une courbe caractéristique de limitation de couple de rotation (8) avec les valeurs des quantités de carburant injectées en fonction de la vitesse de rotation, suivis d'un sélecteur de valeur minimale (9) qui transmet au régulateur de débit (3) un signal qui correspond à la quantité de carburant injectée la plus faible déterminée pour le point de fonctionnement considéré dans le diagramme caractéristique de fumée et dans la courbe caractéristique de limitation de couple de rotation, et un régulateur d'injection (4) réglé électroniquement pour modifier le début d'injection en fonction des paramètres de fonctionnement, caractérisé en ce que pour la régulation de la quantité de carburant injectée en fonction de la valeur effective du début d'injection, il est prévu un diagramme caractéristique (10) supplémentaire dans lequel la quantité d'injection maximale pour un fonctionnement sans fumée est stockée en fonction de la vitesse de rotation et de la valeur effective du début d'injection, et que le signal provenant du diagramme caractéristique supplémentaire (10) est également transmis au sélecteur de valeur minimale (9) dont le signal de sortie correspond maintenant à la valeur la plus faible des quantités de carburant injectées déterminées à partir du diagramme caractéristique de fumée (7), de la courbe caractéristique de limitation de couple de rotation (8) et du diagramme caractéristique supplémentaire (10).
- Dispositif d'injection de carburant selon la revendication 1, caractérisé en ce que dans le diagramme caractéristique (10) la quantité d'injection maximale est stockée en fonction de l'écart entre la valeur effective du début d'injection et la valeur de consigne du début d'injection en fonction de la vitesse de rotation.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3928875A DE3928875A1 (de) | 1989-08-31 | 1989-08-31 | Kraftstoff-einspritzvorrichtung fuer eine luftverdichtende brennkraftmaschine |
DE3928875 | 1989-08-31 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0489789A1 EP0489789A1 (fr) | 1992-06-17 |
EP0489789B1 true EP0489789B1 (fr) | 1994-03-23 |
Family
ID=6388315
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90912907A Expired - Lifetime EP0489789B1 (fr) | 1989-08-31 | 1990-08-24 | Dispositif d'injection de carburant pour moteurs a combustion interne a compression d'air |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0489789B1 (fr) |
DE (2) | DE3928875A1 (fr) |
WO (1) | WO1991003637A1 (fr) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4242252A1 (de) * | 1992-12-15 | 1994-06-16 | Bosch Gmbh Robert | System zur Steuerung einer Kraftstoffzumeßeinrichtung |
DE19509394C2 (de) * | 1995-03-15 | 2000-02-17 | Man Nutzfahrzeuge Ag | Regelung des Betriebsverhaltens eines Verbrennungsmotors, insbesondere Dieselmotors, eines Kraftfahrzeuges |
DE19540061C1 (de) * | 1995-10-27 | 1996-10-02 | Daimler Benz Ag | Verfahren und Vorrichtung zur Steuerung eines Kraftfahrzeug-Dieselmotors |
DE19646942A1 (de) | 1996-11-13 | 1998-05-14 | Bayerische Motoren Werke Ag | Kraftstoff-Einspritzvorrichtung für eine luftverdichtende Brennkraftmaschine |
DE19744683A1 (de) * | 1997-10-09 | 1999-04-15 | Bayerische Motoren Werke Ag | Kraftstoff-Einspritzvorrichtung für eine luftverdichtende Brennkraftmaschine |
DE19819481A1 (de) * | 1998-04-30 | 1999-11-04 | Volkswagen Ag | Triebstrangmangementfunktion eines Fahrzeuges mit CVT-Getriebe |
US6152107A (en) * | 1998-08-24 | 2000-11-28 | Caterpillar Inc. | Device for controlling fuel injection in cold engine temperatures |
DE102004011599B4 (de) * | 2004-03-10 | 2006-03-02 | Mtu Friedrichshafen Gmbh | Verfahren zur momentenorientierten Steuerung einer Brennkraftmaschine |
DE102006044771B4 (de) * | 2006-09-22 | 2019-03-28 | Robert Bosch Gmbh | Verfahren und Steuergerät zur Bestimmung eines Fehlers einer Einspritzmenge eines mit einer Ansteuerdauer angesteuerten Einspritzstellgliedes eines Verbrennungsmotors |
AT520760B1 (de) * | 2017-12-22 | 2019-10-15 | Avl List Gmbh | Verfahren zur begrenzung eines motormoments |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2741834A1 (de) * | 1977-09-16 | 1979-03-29 | Bosch Gmbh Robert | Einrichtung zum regeln der zusammensetzung des betriebsgemisches einer brennkraftmaschine |
WO1982003107A1 (fr) * | 1981-03-03 | 1982-09-16 | Stevenson Thomas T | Systeme de commande de moteur |
CA1197303A (fr) * | 1981-07-23 | 1985-11-26 | Thomas M. Mchugh | Methode et dispositif de regulation du moment d'injection du carburant pour moteur a combustion interne par compression |
JPS61187560A (ja) * | 1985-02-15 | 1986-08-21 | Diesel Kiki Co Ltd | 燃料噴射時期制御方法 |
EP0221832A3 (fr) * | 1985-11-07 | 1988-09-14 | Ail Corporation | Commande d'injection de carburant et senseur d'avance et de vitesse |
DE3540813A1 (de) * | 1985-11-16 | 1987-05-21 | Daimler Benz Ag | Verfahren zur einstellung des foerderbeginns an einem spritzversteller einer einspritzpumpe einer luftverdichtenden brennkraftmaschine |
DE3729771A1 (de) * | 1987-09-05 | 1989-03-16 | Bosch Gmbh Robert | Verfahren und einrichtung zur kraftstoffzumessung bei einer diesel-brennkraftmaschine |
-
1989
- 1989-08-31 DE DE3928875A patent/DE3928875A1/de not_active Withdrawn
-
1990
- 1990-08-24 EP EP90912907A patent/EP0489789B1/fr not_active Expired - Lifetime
- 1990-08-24 WO PCT/EP1990/001418 patent/WO1991003637A1/fr active IP Right Grant
- 1990-08-24 DE DE90912907T patent/DE59005136D1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE3928875A1 (de) | 1991-03-07 |
EP0489789A1 (fr) | 1992-06-17 |
DE59005136D1 (de) | 1994-04-28 |
WO1991003637A1 (fr) | 1991-03-21 |
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